diff --git a/roles/docker/defaults/main.yml b/roles/docker/defaults/main.yml
index da366d2..1f34ddb 100644
--- a/roles/docker/defaults/main.yml
+++ b/roles/docker/defaults/main.yml
@@ -110,7 +110,7 @@ services:
     file: privatebin.yml
     domain: "paste.{{ base_domain }}"
     volume_folder: "{{ volume_root_folder }}/privatebin"
-    version: 20221009
+    version: "20221009"
 
   codimd:
     file: codimd.yml
@@ -174,11 +174,11 @@ services:
     file: drone.yml
     domain: "drone.{{ base_domain }}"
     volume_folder: "{{ volume_root_folder }}/drone"
-    version: 1
+    version: "1"
 
   mailu:
     file: mailu.yml
-    version: 1.9
+    version: "1.9"
     domain: "mail.{{ base_domain }}"
     dns: 192.168.203.254
     subnet: 192.168.203.0/24
@@ -218,4 +218,4 @@ services:
 
   watchtower:
     file: watchtower.yml
-    version: amd64-1.5.3
+    version: "1.5.3"